20568340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{331}}^1$

素因数の和:592

約数の個数: 48

約数和(自身を含む): 46851840

約数和(自身を除く): 26283500

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 239, 260, 331, 478, 662, 956, 1195, 1324, 1655, 2390, 3107, 3310, 4303, 4780, 6214, 6620, 8606, 12428, 15535, 17212, 21515, 31070, 43030, 62140, 79109, 86060, 158218, 316436, 395545, 791090, 1028417, 1582180, 2056834, 4113668, 5142085, 10284170, 20568340]

約数ペア:

[(1, 20568340), (2, 10284170), (4, 5142085), (5, 4113668), (10, 2056834), (13, 1582180), (20, 1028417), (26, 791090), (52, 395545), (65, 316436), (130, 158218), (239, 86060), (260, 79109), (331, 62140), (478, 43030), (662, 31070), (956, 21515), (1195, 17212), (1324, 15535), (1655, 12428), (2390, 8606), (3107, 6620), (3310, 6214), (4303, 4780)]